Check Point Advisories

GD Library LibGD Integer Overflow (CVE-2016-5766)

Vulnerability
Protection

Check Point Reference:	CPAI-2016-0972
Date Published:	1 Nov 2016
Severity:	Medium
Last Updated:	Tuesday 08 November, 2016
Source:	LibGD
Industry Reference:	CVE-2016-5766
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	GD Library libgd prior to 2.2.3
Vulnerability Description	A code execution vulnerability exists in LibGD. The vulnerability is due to an integer overflow leading to a heap buffer overflow. A remote attacker can exploit this flaw by getting the target application to process a crafted malicious GD2 file. Successful exploitation could result in code execution in the security context of the user process.

Protection Overview

This protection detects attempts to exploit this vulnerability.

In order for the protection to be activated, update your Security Gateway product to the latest IPS update. For information on how to update IPS, go to SBP-2006-05, click on Protection tab and select the version of your choice.

Security Gateway R80 / R77 / R75

In the IPS tab, click Protections and find the GD Library LibGD Integer Overflow protection using the Search tool and Edit the protection's settings.
Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name: Content Protection Violation.
Attack Information: GD Library LibGD Integer Overflow